UDFclient is a userland implementation of the UDF filesystem as defined by the OSTA group. It is designed to be a study platform and a run-up to a full read and write (NetBSD) kernel level implementation. It provides a user interface not unlike ftp but differs in that it always fetches or writes files recursively. It supports the basic get, mget, put, mput, mv, rm, mkdir, cd, lcd, free, pwd, and lls command set.